Supercomputers pitted against one another in a high-stakes battle of attack and counterattack over a global network where predatory algorithms trawl the information stream, competing every millisecond to gain an informational advantage over rivals. It sounds like Hollywood fiction, but it's just an average trading day on the stock market.

The Ars System Guide is back, this time with our special gaming edition. If you're looking for upgrades to spice up your summer gaming, the Value Gaming Box and the Performance Gaming Box have you covered.

A high school cheerleader claims a coach forced her to give up her Facebook account login information, only to see her account's contents shared widely with school officials, resulting in extensive disciplinary action. She's now suing everyone involved.

Last weekend, AT&T began blocking 4chan's image server because of what the telecom calls a denial of service attack originating from IP addresses connected to a 4chan server. The blockage has since been removed, but not before 4chan denizens tried retaliating against AT&T.

A new Plasma-based custom KDE desktop shell is designed to deliver a better user experience on netbooks and other devices with small screens. Ars takes a look at the prototype to see how it compares to the conventional KDE desktop environment.

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